MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Pharmaceutical Biotechnology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What bonds stabilize the extracellular structure of proteins? |
| A. | Hydrogen bond |
| B. | Disulfide bonds |
| C. | Hydrogen bonds |
| D. | Ionic bonds |
| Answer» C. Hydrogen bonds | |
| 2. |
Which of the following is a characteristic of a quaternary protein structure? |
| A. | Formed by any single peptide chain in a whole protein molecule |
| B. | Arrangement of polypeptide chains |
| C. | Arrangement of different folding of the structure |
| D. | Arrangement of the water molecules on the surface |
| Answer» B. Arrangement of polypeptide chains | |
| 3. |
Intracellular protein tertiary structures mostly held together by ___________ |
| A. | Covalent forces |
| B. | Disulfide bridges |
| C. | Weak forces |
| D. | Ionic bonds |
| Answer» D. Ionic bonds | |
| 4. |
Which of the following will be a characteristic of homotypic quaternary structure? |
| A. | Formed by any single peptide chain in a whole protein molecule |
| B. | Arrangement of polypeptide chains |
| C. | Association between identical polypeptides |
| D. | Association between subunits of different structure |
| Answer» D. Association between subunits of different structure | |
| 5. |
B-Sheet is the most stable. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
Adjacent polypeptide segments are stacked one above other. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
Alpha-helix and b-sheet, if occur together, are found in different structural layers. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
What is the name of the bond formed when electrons are shared unequally? |
| A. | Polar covalent bond |
| B. | Nonpolar covalent bond |
| C. | Hydrophobic interaction |
| D. | Metallic bond |
| Answer» B. Nonpolar covalent bond | |
| 9. |
What is the name of the bond formed when electrons are shared equally? |
| A. | Disulfide bond |
| B. | Nonpolar covalent bond |
| C. | Hydrophobic interaction |
| D. | Metallic bond |
| Answer» C. Hydrophobic interaction | |
| 10. |
What is the name of the bond found in metals; holds metal atoms together very strongly? |
| A. | Disulfide bond |
| B. | Ionic bond |
| C. | Hydrophobic interaction |
| D. | Metallic bond |
| Answer» E. | |
| 11. |
What is the name of the bond formed between two ions by the transfer of electrons? |
| A. | Disulfide bond |
| B. | Ionic bond |
| C. | Hydrophobic interaction |
| D. | Covalent bond |
| Answer» C. Hydrophobic interaction | |
| 12. |
What is the name of the bond formed between two ions by the sharing of electrons? |
| A. | Disulfide bond |
| B. | H bond |
| C. | Hydrophobic interaction |
| D. | Covalent bond |
| Answer» E. | |
| 13. |
Van der Waals forces are the only attractive forces present in nonpolar compounds. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 14. |
Which of the following is a characteristic of the secondary structure of a protein? |
| A. | Amino acid sequence |
| B. | Association of secondary structure |
| C. | Alpha helix and beta sheets |
| D. | Association of polypeptides |
| Answer» D. Association of polypeptides | |
| 15. |
What is the name of the bond which is caused by changes in electron density? |
| A. | Vander Waals force |
| B. | H bond |
| C. | Hydrophobic interaction |
| D. | Electrostatic bond |
| Answer» B. H bond | |